On Thu, Dec 21, 2023 at 3:07 PM Emil Renner Berthing <emil.renner.berthing@xxxxxxxxxxxxx> wrote: > Linus Walleij wrote: > > Do the people designing boards using this have better documentation than what > > you have? Then either get that documentation or just don't give them > > too much rope. > > We can certainly prevent Linux from ever combining the strong pull-up with the > regular bias, but that doesn't mean that the vendor u-boot can't find a use for > it and might hand over pins in such states Linux then wouldn't know how to > handle. What you are saying is "there might be people who have access to documentation that I don't have so they do this crazy thing". Clearly you cannot design for that. Print a big fat warning and fail probe if it happens. If U-Boot is using some feature you definitely cannot deal with if this happens, and then the people doing this can very well write a patch for the kernel. > If you think its better we could just postpone that problem to when/if it ever > happens. Yes please. Yours, Linus Walleij
